John abraham



JJABRAHAM.

TOWING HOOK. APPLICATION FILED MAY 13, 1921.

Patented Ma 23, 1922.

STAT-ES "rear FFEQE.

JOHIN' ABRAHAM, OF VANCOUVER, BRITISH COLUMBIA, CANADA.

TOWING HOOK.

Applicationfiled May 13,

To all whom it may concern:

Be it known that I, JOHN ABRAHAM, a subject of the King of GreatBritain, and a resident of the city of Vancouver, in the Province ofBritish Columbia, Canada, have invented certain new and usefulImprovements in Towing Hooks, of which the following is a specification.

My invention relates to improvements 1n hooks, with particular referenceto hooks used in towing or on the ends of lines used for fastening raftsor on any line which requires to be let go quickly or which is usuallycut when dismantling the objects WlllCll the line binds, and the objectof my inveni which the figure shows a perspectiveview of the hook.

The body or shank of the hook consists of a forked member indicatedgenerally by the numeral 1 having two parallel side bars or forks 2 and3 between the outer ends of which is pivoted on a bolt 4: a movablehookbill 5 of bell-crank formation Hie arms of which are designated bythenumerals 6 and '7, the arm 7 which is normally horizontal when the hookis locked being provided with an extension or finger 8 while the arm 6is eyed at its outer end as at 9. The opposite ends of the bars 2 and 3are joined and formed into a shackle end 10 to which the towing or otherline may be secured and extending through the bars 2 and 3 adjacent theshackle end 10 are two bolts 11 and 12. A normally vertical arm 13 ispivotally mounted at its lower end'on bolt 11 while at its upper end itis provided with a link 14 bolt connected at both ends by bolts 15 and16 to the arm 6 and arm 13 respectively, the bolt lo passing through theeye 9 of arm 6. At a suitable point in its length the arm 13 is providedwith a notch 17 in which the finger 8 normally rests while piv-Specification of Letters Patent. Patgnted May 23, 1922.

1921. Serial No. 469,345.

otally connected to the arm at a point above its midheight is an arm ordog 18 having a notch 19 adjacent its lower end adapted to normallyengage the bolt 12 and which dog.

is provided with a shackle 20 arranged on the side opposite to thenotched side, to which shackle a tripping line may be attached, asexplained later.

.The manner'in which the hook is used and operates is as follows, itbeing noted that the full line view shows the hook in the closedposition while the dotted lines show it open. When closed the hook billarm 7 lies horizontal with the finger 8 engaged in the notch 17 of thearm 13, which arm is in the vertical position andconnected to the hookhill 6 by the link 14, the dog 18 being then in position with its notchengaging the bolt 12, and

as the parts are thus rigidly connected to gether the hook is maintainedclosed. In the. event of its being desired, however, to let go a linewhich is connected to the hook, such as, for instance, a tow line passedover the hook bill 6, the bolt 15 is removed when, by pulling on a ropeconnected to the shackle 20 the dog 18 is pulled backwardly to free thenotch 19 from the bolt 16 and at the same time the arm 13is also pulledbackwardly to disengage the notch 17 and finger 8 so that the hook billswings to the position shown by the dotted lines, thus opening the hookand letting go the line therefrom in a quick, safe, and simple manner.

Unit I claim as my invention is A hook comprising a shank formed of apair of parallel side bars connected at one end to form. a shackle end,a bill pivotally mounted between the opposite ends of said bars havingan arm lying normally therebetween, a normally vertical arm pivotally,mounted between the bars adjacent the shackle end having a notch inwhich the end of the bill arm is normally engaged, an arm pivotallyconnected at one end to said vertical arm at a point above its midheighthaving 1ts lower end provided with a notch and disposed between theshank bars behind the vertical arm and a bolt extending through saidbars with which the last mentioned notch is normally engaged.

Dated at Vancouver, B. (1., this28th day i of April,'1921. JOHN ABRAHAM.

